Brake-lining drill and countersink



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May 13 1924.

EfY/f ATTORNEY G. B. CADY May 13 1924. 1,494,216

BRAKE LINING DRILL AND COUNTEHSINK Filed May 1'7. 1923 2 Sheets-Sheet 2iN ENTOR ATTONEY.

Parental May 13,' 1924.

GEORGE B. CADY, F CANASTOTA,-NEW YORK.

anexa-minne mnu. aNnooUNrnas'mx.

application ma my 17, was. semimfesasse.

o all whom t may concern:

Be it known that I, Gnonon B. Cani', a citizen of the United States ofAmerica, of Canastota, in the county of Madison, in the .State pr NewYork, have invented new and useful Improvements in Brake-Lining Drillsand Countersinks, of which the following, taken in connection'with theaccompanying drawings, is a full, clear, and exact description.

-This invention relates to a counter-boring machine adapted to be usedmore specifically for counter-,boring thelinings of brake bands andanala ous articles for receivingr the heads of rivets or similarfastening devices commonly used in fastening brake linings to theirrespective sup orts which are usu-l allv'niade of more or ess resilientmetal.

These'brake bands or segments Vare usually concave or convex with thelining secured to the inner concave face thereof by means of rivets orequivalent fastening means, and one of the main objects is to provide asimple and eilcient implement by which the inner concave. faces of thelinings may be counterbored coaxially with the rivet holes in themetallic supported d extends forwardly from said rod a suilicientsegment so that when the rivets are secure in place, their heads willlie within the inaner faccsof the lining to avoid contact with thesurface of the brake drum.

Other objects relating to specific parts of the machine will be broughtont ,in the following description.

In the drawings,

Figures 1 and 2 arerespectively, a front p elevation and a sideelevation of a machine embodying` the various features of my invention,a portion of the machine shown in Figure 2 being in section.

The machine is comparatively light and easily. rtable frorlnc) ace toplace, but is adap to be secu in an upright position to any suitableupright support not verticall movable rod or bar 4 which is slidab einsaid bearings.

The upper cndof the rod -4. is threaded and enga ed by a nut and betweenthis nut an the upper face of the upper bearing 3` is located acoilspring 6` which surrounds the adjacent portionl of the rod -4- forretractin the nod -4- u wardly'and yieldingly oldingit in an evatedposition Yso that it may be moved downwardly against the action of thespring when desired and for the purpose hereinafter descrimd.

The .nut -5-l may,` be adjustedto place the spring -6 under the desiredtension suliiclent'to assure the upward movement of the rod -4- andparts carried thereby. The lower end 'of the rod isprovided with a slotor key-way 7 for recel a pinV -8 in the" bearing 3 to hol said rodyagainst relative turning movement 1n its bearings, said slot or keywaybe 1n elongated vertically. to permit the desiredA vertical movementofthe rod.

.A work table '-9- is secured by a keypin to theintermediate portion ofthe rod 4 by the bearngsI-S- and distance to permit the work, as forexample, the brake band -A- to be placed thereon for centering andcounter-boring purposes.

A motor supporting frame 11- is secured-,by bolts 12fto the front faceof the lower end of the-frame 1 and extends forwardly therefrom in ahorizontal lane some distance below the lower bearingV for receiving andsupporting an electric motor .-13- with its armature shaft as -14 in a.vertical position directly under the forwardly proiecting end of thework table 9-. y

A counter-boring tool -15- is secured to the motor shaft -14- with. itsworking end uppermost and is adapted to extend into shown and for thispurposeis provided with an openingin the front end of the work tiallyflat back provided with bolt openings A forwardly and rearwardlyextending for receiving suitable bolts not shown, work4 centering arm'16- is pivoted atv4 "whereby the mac ine as a whole, may be -17- to theframe 1 and extends fortoan upright wall or other availwardly therefromdirectly over the work table -9- and. is provided at its 41front 2i ablesu port at such height as may be most end with adownwardly projectingcenterconvenient for the operator. 'g Thefnme -lis provided on its fronting pin -18- incoaxial vertical alineaide, with vertically alined -43-ment with the axis of the counter-boring Elin vertically spaced relationfor receiving a tool -15- for engaging inthe rivet-holes as U0 kwillsupport.

'-199 in :he mm1 segment egdfthe the front face of the frame, forlimite` inthe downwrd movement of the front en of the erm to a. positionwhich coaxial vertical a-linementjwiththe counter;4 baring toot-.P1 thuspermitting the work to bereadilyrlwed poses when the arm '--16' iselevated after whchseiderm -xs allowedto drop by its own weightuntlllimited byye agement with the stop '20- with t e Aframe in 1- or 'by'the engagement of .the pin '4-18- in the rivet hole f -`19- of vthe'this' downward movement "o its .supporting table continues,j therelatively larger counterfboring .portion f the toolV 4o shown but whiWhen thework isplaced ,uponl the table -9-and properl lng 0f the Withthnhole the worktogether with the table '9- and its 'supporting ro'd iswardly by hand .against 'the -action of the springV -6 th drilling; endof the counter-boring tool -15- todrill a -relatively smallv holel as-a-in through the .brake band linin coincidence with'the revious yformed hole --19fin the metal ckin the work and will bebrouht'intojengagement with the inner faceV 0 for'v'receivingv-thehead.4 of the lvetnot h 1ste. beinserted through the registering holesin the Alining and metal Athe assurance that-the innerhcad 'of thebacking'and vproperly rivetedin place for securing the liningy to thebacking with rivet wlllebe counter-sunk within the inner face' off theliningpit being-v understood .that

the motor is ihllnotion during the drilling i operation and 'that' andcounter-drilling immediately following 'this operation; the

pressure of the operator u released to .yieldsaid wor together withroperl 'centering the rivet vholes the wor 'y by hand about t e-ii'x'isA A It he entering' pin +148- in clianges upon the .work uwforeentelng and counter-boring pur;

.able vertically on t y centered by the register.

ereby .A causing the smallf' -aand asf thelining to'enlarge the bore.

table l-vvorlr table,

on thwork is ricamo the .table 9- and its su porting rod -4- toV bereturned upward y by the sprin -6 thisoperation being repeated by eachrivet hole in the brake band.

Thelower end of the rod 4 is ro- Yided with' a stop pin -21- ada te toengage'the underside of the' lower Bearing for limiting the upwardmovement of thegsaid rod and parts carried .thereby is evident, howeverthat lvarious may bemade in the detail construction arid arrangement ofvarious parts ofthis device without departing from the lspirit o f thisinvention.

I claim: 2 1 f A drill and counter-boring machine` comprising anupriilit frame, a rod slidpressedfupwardly, a. work table carried by.the rod, a. motor mounted on the framebeneath the work table, andprovided with .a vertically disposed shaft, a drilling andcounter-boring'- tool drectfconnected with the upper end of thel motorshaft, and' a work centering device pivotally mounted on 'the 4frameabove the work tablette swing pressed downvertically and provided with awork vcenteringpincoaxial with. the axis of the 'counter- Aboring toolfor centering-the work relatively to' said tool.

' A device for drilling and counterboring e frame and s ringthe linin sof brake bands comprising` an upright rame having forwardly projectingbearings in verticali)7 spaced relation, a rod Slidable vertically insaid bearings, a work table secured to and projecting `forwardly1 fromthe roll, means above the worktablc for centering the work thereon, arotary tool supporting member below the work provided with acounter-boring tool coaxia with the work centering means when the latteris adjusted for use,v said rod and together with the worin thereon beingdepressable by hand to bring the work intflifengagement with thecounter-boring too.

In witness whereof I have hereunto set my hand this 30th day of A ril,1923.

' L GE .B CADY. Witnesses:

Fuso. S. MooRE,

LEON G. PRESION.

